In addition to the drawing errors we've noted, these are all png files. PNG format is to be used only for images with transparency. They need to be converted to jpg prior to uploading.
The fact that they were png files may not have been the rejection reason, so just re-uploading them without fixing the other errors, like those noted above, will not necessarily result in acceptance. Each image needs to be carefully inspected by zooming in to 100% and edited to correct the errors.